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US 4,289,533 AGranted
Deoxidizing alloy for molten steel
AssigneeNational Research Institute for Metals
InventorsKoki Gunji, Takehiro Dan
Life of this patent
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Abstract
A deoxidizing agent for molten steel, which is an alloy of aluminum and at least 2 mole %, based on the aluminum, of an element of Group IIIa of the periodic table. In steel which has been deoxidized with this deoxidizer, an oxide inclusion based on the deoxidizer is not dendritic but spherical, and does not cause defects to steel products. Misch metal is especially preferred as the Group IIIa metal.
Claims1
A deoxidizing alloy for molten steel consisting essentially of aluminum and from 2 to 10 mole %, based on the aluminum, of yttrium.
Dependencies are inferred from the claim text.